Finding the Fourth Proportional to 10,955.78, 16,441.62 and 4,383.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,955.78 : 16,441.62 = 4,383.80 : x
2. Step 2: Convert to fraction form
   10,955.78/16,441.62 = 4,383.80/x
3. Step 3: Cross multiply
   10,955.78x = 16,441.62 × 4,383.80
4. Step 4: Simplify right side
   10,955.78x = 72,076,773.76
5. Step 5: Solve for x
   x = 72,076,773.76/10,955.78
6. Step 6: Final answer
   x = 6,578.88